Nonlinear interaction between broadband single-photon-level coherent states

We experimentally demonstrate the nonlinear interaction between two chirped broadband single-photon-level coherent states. Each chirped coherent state is generated in independent fiber Bragg gratings. They are simultaneously coupled into a high-efficiency nonlinear waveguide, where they are converted into a narrowband single-photon state with a new frequency by the process of sum-frequency generation (SFG). A higher SFG efficiency of 1.06×10−7 is realized, and this efficiency may achieve heralding entanglement at a distance. This also made it possible to realize long-distance quantum communication, such as device-independent quantum key distribution, by directly using broadband single photons without filtering.

[1]  M. Jazbinsek,et al.  Photonic Applications With the Organic Nonlinear Optical Crystal DAST , 2008, IEEE Journal of Selected Topics in Quantum Electronics.

[2]  J. Pritchard,et al.  Cooperative atom-light interaction in a blockaded Rydberg ensemble. , 2010, Physical review letters.

[3]  S. Kurimura,et al.  Quasi-phase-matched adhered ridge waveguide in LiNbO3 , 2006 .

[4]  N. Gisin,et al.  Tunable upconversion photon detector , 2008, 0807.3399.

[5]  K. Banaszek,et al.  Conditional preparation of maximal polarization entanglement , 2003 .

[6]  Alexey V. Gorshkov,et al.  Quantum nonlinear optics with single photons enabled by strongly interacting atoms , 2012, Nature.

[7]  Jian-Wei Pan,et al.  Measurement-device-independent quantum key distribution over 200 km. , 2014, Physical review letters.

[8]  Qiaoyan Wen,et al.  Finite-key analysis for measurement-device-independent quantum key distribution , 2012 .

[9]  Masatoshi Fujimura,et al.  Highly efficient second-harmonic generation in buried waveguides formed by annealed and reverse proton exchange in periodically poled lithium niobate. , 2002, Optics letters.

[10]  Guangzhen Li,et al.  Enhanced Kerr electro-optic nonlinearity and its application in controlling second-harmonic generation , 2015 .

[11]  Jeffrey H. Shapiro,et al.  High-dimensional quantum key distribution using dispersive optics , 2012, Physical Review A.

[12]  N Gisin,et al.  Nonlinear interaction between single photons. , 2014, Physical review letters.

[13]  All-optical two-channel polarization-multiplexing format conversion from QPSK to BPSK signals in a silicon waveguide , 2016 .

[14]  H. J. Kimble,et al.  Photon blockade in an optical cavity with one trapped atom , 2006, QELS 2006.

[15]  M. Fejer,et al.  Interaction of independent single photons based on integrated nonlinear optics , 2013, Nature Communications.

[16]  Christoph Simon,et al.  Three-photon energy–time entanglement , 2012, Nature Physics.

[17]  Yaron Silberberg,et al.  Nonlinear interactions with an ultrahigh flux of broadband entangled photons. , 2005, Physical review letters.

[18]  Xianfeng Chen,et al.  Normal, degenerated, and anomalous-dispersion-like Cerenkov sum-frequency generation in one nonlinear medium , 2015 .

[19]  Logan G. Wright,et al.  Spectral compression of single photons , 2013, Nature Photonics.

[20]  N. Gisin,et al.  Proposal for implementing device-independent quantum key distribution based on a heralded qubit amplifier. , 2010, Physical review letters.

[21]  Hybrid silicon slotted photonic crystal waveguides: how does third order nonlinear performance scale with slow light? , 2016 .

[22]  Ryosuke Shimizu,et al.  Observation of optical-fibre Kerr nonlinearity at the single-photon level , 2009 .

[23]  Nicolas Gisin,et al.  Faithful entanglement swapping based on sum-frequency generation. , 2011, Physical review letters.

[24]  Wei Zhang,et al.  Quantum teleportation with independent sources and prior entanglement distribution over a network , 2016, Nature Photonics.